Middle English word horn comes from Proto-Indo-European *gʰreH₁-, Proto-Indo-European *kor, Proto-Indo-European *ḱerh₂-, and later Proto-Germanic *hurną (Horn.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *gʰreH₁- | Proto-Indo-European (ine-pro) | to grow, become green, grow, become green |
| *kor | Proto-Indo-European (ine-pro) | |
| *ḱerh₂- | Proto-Indo-European (ine-pro) | |
| crescendum | Latin (lat) | |
| *ḱr̥- | Proto-Indo-European (ine-pro) | |
| *hurną | Proto-Germanic (gem-pro) | Horn. |
| horn | Old English (ang) | Horn. |
| horn, horne | Middle English (enm) |